"No one earns below average wage" means that everyone has to earn the same wage. so, there is no one who earns above the average wage. I thought that it doesn't make any sense. Even if there are infinit people, people has to get the same price to satisfy the condition. If there is someone get more wage than other people, it makes average bigger and then, there should be people who get less wage than others. Even though, like AJ said above, $5.0007 is about $5, there should be people who get less wage because it is evident that $5.0007 is bigger than $5. I just want to look at this results in equations. Is there any idea to express this in equations?